Oil-feed device for diestocks



April 28,1925. 3 1,535,773

' T. HEER FEED DEVICE FOR DIESTOCKS Filed March 22, 1923 u 2 20 v is 121 Patented Apr. 28, 1925.

UNITED STATES PATENT OFFICE.

THOMAS HEER, OF BALTIMORE, MARYLAND,ASSIGNOR, BY DTRECT AND MESNE AS- $IGNMENTS, TO JOHN A. BAKER, OF REISTERSTOW'N, MARYLAND.

OIL-FEED' DEVICE FOR DIESTOOKS.

Application filed March. 22, 1923. Serial No. 626,836.

To all whom it may concern.

lie it known that THoMAs Hnnu, a citizen of the United States, residing at Baltimore, in the State of Maryland, has invented certain new and useful Innarovements in Oil- Feed Devices for Diestocks, of which the following is a specification.

This invention relates to an improved oil teed device for die stocks and has for its objects to provide an improved oil feed that will be put into operative condition when the handle is screwed into the stock and will automatically cut-off the outlet for the oil when the handle is detached.

Another object is to provide an improved valve structure for handles of die stocks whereby waste of oil will be avoided in case the tool is left in an idle condition with the handle elevated. y

The invention is illustrated in the accompanying drawing, wherein.-

Fig. 1 illustrates in front or face view, a stock in which the invention is embodied.

Fig. 2 shows the oil-feeding devices in longitudinal section.

Fig. 3 illustrates a cross-sectional detail through the same-the section being taken on the line 33 of Fig. 2, looking in the direction of the darts, and

Fig. 4 shows a sectional detail through the end of the stock-handle with the filling plug therein. 7

Referring to the drawing the numeral 5, designates the stock body of any desired construction which is provided with handle sockets 6, and a port 7 at the inner end thereof to conduct lubricant to the cutting dies, A, details of which latter it is deemed unnecessary to show.

The outer end of each handle-socket is provided with cavity 8 having circumferential screw-tln'eads, and the inner end or base of this cavity is provided with an aniuilar valve-seat 9, from the center of which the port 7 for the lubricant extends, as best illustrated in Fig. 2 of the drawing.

In the present instance, the stock is provided with two handles 10, each of Which is hollow whereby to form an oil-chamber 11.

At the inner end, each handle is exteriorly screw-threaded so as to screw into the threaded cavity 8 of the socket, and on the interior, the chambered-end of the handle handle. This valve-body has a circular central recess 13, at its inner end and also has a longitudinal central passage 14 extending from said recess to the opposite or outer end of the body.

At the outer end, the valve-body is provided with a central, beveled valve-seat, 15, whichflares outwardly from the outer end of the central passage 14, for a purpose presently to be explained. Beyond said valve-seat 15, the valve-body has an annular longitudinally-projecting wall 16 with a beveled circular rim-edge 17 which latter forms a valve seat for a ball-valve 18.

A valve-stem 19, extends all the way through the central passage 14': of the valvebody and has a beveled head 20, on its outer end and a hemispherical head 21, at its inner end. This valve-stem is provided with a central passage 22, which extends from the extreme inner end to a point at the base of the beveled head 20, on the outer end, and at said latter end a port 28, is provided in the side of the valve stem which provides for the passage of oil or lubricant from the exterior circumference of the stem to the interior passage 14.

A spiral spring 23, is coiled about the inner end of the valve-stem and'has one end seated against the hemispherical head 21, while its other end seats in the outer end of the central recess 13 so that said spring will constantly tend to move the valve-stem longitudinally in a direction that will seat the beveled head 20 in the valve-scat 15, thereby tending to close the port 28.

The inner rim-edge 24, of the valve-body around the recess 13, is provided at diametrically-opposite sides with a notch 25, whereby a suitable screw-driver tool may be utilized to conveniently screw the valve-body into the inner end of the handle. These notches are shown in Fig. 3 of the drawing.

The outer end of the handle has a screwplug 26, which may be detached for the purpose of permitting oil 27, to be poured into the handle-chamber 11, in which the ballvalve 18, is also located.

hen oil is placed in the handle-chamber,if the handle be detached at that time from the stock, the valve-stem will be springpressed in a direction to seat valve 20 on the beveled seat 15, so that-port 28, will, at such times, be closed and the oil cut off from escaping through passage 22.

W'hen the handle is screwed into the socket, the head 21, will contact with seat 9, and open the valve as the handle is screwed home.

After the handle is attached the valve stem will remain in the open position so that as the stock is rotated the oil will pass down the passage 22, into passage 7, and drip at the die where the oil is needed.

If the stock is left idle with one of the handles elevated, the ball-valve 18, will roll down the chamber 11, and seat on the beveled edge 17, of the wall 16, and thereby cut off the flow of oil to the open valve and avoid a waste of oil.

Having described my invention, I claim,-

1. The combination with a stock-body having a screw-threaded socket and an oilfeed passage, of a handle carrying an oilstorage chamber and provided with a threaded end to screw into said body-socket, a valve device removable with and carried by the threaded inner end of the handle said valve device being moved to an open position by engaging the stock socket as the handle is screwed in place in said stock and means for closing the said valve as it and the handle are detached from the stock.

2. The combination with a stock-body having a handle-socket, of ahandle detachably secured in said socket and carrying an oil-storage chamber; a valve at the inner end of the. handle and having means projecting therefrom to engage the stock as the handle is screwed into the stock tohold the valve open while the handle is attached to the stock-socket, a second valve to out oft the [low of oil to the first-named valve as the handle is swung upwardly and means for closing the firstnamed valve as the handle is detached from the stock-socket.

3. The combination with a stock-body having a screw-threaded handle socket and an oilqmssage leading therefrom, of a handle provided with an oil-chamber and having a threaded end to screw into said socket; a valve-body secured in the inner end of the handle and having two valve-seats at the outer end thereof; a valve stem extending through the body and having a valve-head at its outer end to engage one of the said two seats on the valve-body and the inner end of said stem projecting at the inner end of the valve-body and engaging the base of the stock-body socket to hold the valve-stem in a position to keep the valve at the outer end thereof unseated as long as the handle is engaged in said socket, a loose valve in the oilchamber of the handle to engage the other seat of said valve-body and means for moving the stem to seat the valve-head as the said handle is detached from the stock-body.

l. The combination with a stock-body having a handle socket and an oil-passage leading therefrom, of ahandle provided with an oil-chamber; a cylindrical valve-body secured in the inner end of the handle and having an annular rim-edge valve-seat at its outer end and also having a second valveseat adjacent to said rim-edge valveseat; a valve stem extending longitudinally through body and provided with a passage there through and having a valve head at its outer end; spring means for drawing the valvestem closed when the handle is detached, and a ball valve in the oil-chamber of the handle to seat on the rim-edge valve-seat when the handle is elevated.

5. The combination with a handle for die stocks said handle having an oil-chainber, of a valve-body rigidly secured in the end of the handle said body having a central end recess at the inner end thereof and provided with a central passage extending from said recess toward the outer end of the body; a valve stem extending through said body-passage and provided with an oil passage that opens through the side of the stem near the outer end of the latter; a valvehead on said outer end of the stem beyond said side opening, and a spring in the recess at the inner end of the body to move the stem longitudinally and close the side opening thereof.

In testimony whereof I aflix my signature. 

